Tim O’Reilly is one of the world’s most influential tech analysts. As the founder of the publishing company O’Reilly Media, he became known for spotting technologies with world-shaking potential – from predicting the rise of the internet in the 1990s to coining and popularising terms like ‘Web 2.0’ and ‘Open Source’ in the 2000s. WTF? is his first book aimed at the general reader.